Infiniti G37 Coupe. Manual — part 959

PCS

RELAY CONTROL SYSTEM

PCS-5

< FUNCTION DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

NOTE:

BCM controls the starter relay.

Component Parts Location

INFOID:0000000001605856

Control relay

Input/output

Transmit unit

Control part

Reference

page

• Headlamp low relay
• Headlamp high relay

• Low beam request signal
• High beam request signal

BCM (CAN)

• Headlamp low
• Headlamp high

EXL-8

Front fog lamp relay

Front fog light request signal

BCM (CAN)

Front fog lamp

EXL-22

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking lamp
• Side marker lamp
• License plate lamp
• Tail lamp
• Illuminations

EXL-26

,

INL-12

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper

WW-5

Front wiper auto stop signal

Front wiper motor

• Horn relay 1
• Horn relay 2

• Theft warning horn request

signal

• Horn reminder signal

BCM (CAN)

• Horn (low)
• Horn (high)

SEC-23

• Starter relay

NOTE

• Starter control relay

Starter control relay signal

BCM (CAN)

Starter motor

SEC-109

,

SEC-107

Steering lock unit condition
signal

Steering lock unit

Starter relay control signal

TCM

Clutch interlock switch

Steering lock relay

Steering lock relay signal

BCM (CAN)

Steering lock unit

SEC-101

Steering lock unit condition
signal

Steering lock unit

A/T device (Detention switch)
signal

A/T device (Detention
switch)

A/C relay

A/C compressor request sig-
nal

ECM (CAN)

A/C compressor
(magnet clutch)

HAC-65

Ignition relay

Ignition switch ON signal

BCM (CAN)

Ignition relay

PCS-17

Vehicle speed signal

Unified meter and A/C amp.
(CAN)

Push-button ignition switch
signal

Push-button ignition switch

JPMIA0505ZZ

PCS-6

< FUNCTION DIAGNOSIS >

[IPDM E/R]

RELAY CONTROL SYSTEM

1.

IPDM E/R

A.

Engine room dash panel (RH)

PCS

POWER CONTROL SYSTEM

PCS-7

< FUNCTION DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

POWER CONTROL SYSTEM

System Diagram

INFOID:0000000001605857

System Description

INFOID:0000000001605858

COOLING FAN CONTROL

IPDM E/R outputs pulse duty signal (PWM signal) to the cooling fan control module according to the status of
the cooling fan speed request signal received from ECM via CAN communication. Refer to

EC-72, "System

Diagram"

.

ALTERNATOR CONTROL

IPDM E/R outputs power generation command signal (PWM signal) to the alternator according to the status of
the power generation command value signal received from ECM via CAN communication. Refer to

CHG-8,

"System Diagram"

.

Component Parts Location

INFOID:0000000001605859

JSMIA0004GB

1.

IPDM E/R

A.

Engine room dash panel (RH)

JPMIA0505ZZ

PCS-8

< FUNCTION DIAGNOSIS >

[IPDM E/R]

SIGNAL BUFFER SYSTEM

SIGNAL BUFFER SYSTEM

System Diagram

INFOID:0000000001605860

System Description

INFOID:0000000001605861

• IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via

CAN communication. Refer to

MWI-23, "WARNING LAMPS/INDICATOR LAMPS : System Diagram"

.

• IPDM E/R reads the status of the hood switch and transmits the hood switch signal to BCM via CAN commu-

nication. Refer to

SEC-129, "Description"

.

• IPDM E/R receives the rear window defogger status signal from BCM via CAN communication and transmits

it to ECM and AV control unit via CAN communication. Refer to

DEF-4, "System Diagram"

.

Component Parts Location

INFOID:0000000001605862

JSMIA0005GB

1.

IPDM E/R

A.

Engine room dash panel (RH)

JPMIA0505ZZ